Question

Is $12$ O'clock in the afternoon $\text{AM or PM?}$

Answer 1

Find $12$ O'clock in the afternoon AM or PM

The abbreviation $AM$ stands for ante meridiem (before the meridian line has crossed the Sun or the time between midnight and $11:59$ in the morning).

$PM$ stands for post-meridiem (after the meridian line has crossed the Sun or the time between noon and $11:59$ at night).

$12$ O’clock in the afternoon is $PM$ because the $PM$ represents the time between noon and $11:59$ at night.

Hence, $12$ PM is used to address $12$ O'clock in the afternoon.